Positive latch for awning type windows



Nov. 20, 1956 A. H. souLE POSITIVE LATCH FOR AWNING TYPE WINDOWS 5 Sheets-Sheet 1 Filed Sept. 2. 1954 INVEN TOR. fer/m hi jaw:

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IN V EN TOR. [pr/m 501 4! BY flrrap/vixi Nov. 20, 1956 A. H. SOULE POSITiVE LATCH FOR AWNING TYPE WINDOWS Filed Sept. 2, 1954 nite States Patent OfiFice 2,770,851 Patented Nov. 20, 1956 POSITIVE LATCH FOR AWNING TYPEv WINDOWS Arthur H. Soule, Beverly Hills, Calif., assignor to Dalmo Continental, Inc., LosAngeles, Calif., a corporation of California Application September 2, 1954, Serial No. 453,803

6 Claims. (Cl. 204-42) This invention relates to a multiple sash window construction. More particularly, the invention .relates to a louver-type windowhavinga plurality of sashes swingable about horizontal axes between open and closed position, and to a structure. to provide a positive lock to prevent opening of the upper sashes without opening the lowermost sash.

It is the principal object of this invention to provide a lock mechanism associated with the traveling bar of a window. operating mechanism to positively lock the upper sashestofa multiple sash window construction against opening movement thereof.

A furtherobject of this invention is to provide awindow.

mechanism as set forth .in the preceding object wherein the. upper sashes and'the traveling bar each has means attached thereto which are adapted to interengage during thelast few increments of travel of the traveling bar dur-,

ing closing movement thereof.

The preferred forms of the invention are described in. the following detailed specification, and illustrated by way of example, in the accompanying drawings, wherein: Fig. 1 isa longitudinal sectional view taken. through a window embodying the principles of my invention.

Fig. 2 is a similar view to that shown in Fig. 1, drawn toran enlarged scale, showing the individual sashes in phantom lines and the lock mechanism in latched relation. Fig. 3 is a sectional view, taken on line-3.-3 of Fig. 2.

Fig. 4 is a similar view to that shown in Fig. 2 but' shows the lower sash partially open and the lock mechanism in release position.

Fig. 5 is a section'al'view taken on line 5-5 of Fig. 4. Fig. 6 is an-exploded view of the parts comprising the traveling bar portion of the lock mechanism, the parts being shown generally in the position they will assume.

when assembled.

Fig. 7 is a view of'the sash portion of the lock mechanism shown'inits related position relative to the parts shown in Fig. 6.

Fig. 8 shows a modification of the lock mechanism shown in'Figs. l to 7, inclusive, showingthe parts in latched relation.

Fig. 9 is a similar view to that shown in Fig. 8 and shows the lock mechanism released.

Fig. 10- is a sectional View taken on line 1(l10of,

Fig 11 shows a second modification of the lock mechanism disclosed in Figs. 1 to 7, inclusive.

Fig. 12 is a sectional view taken on line 12-12 of Fig. 11.

Referring now to the drawings, wherein similar refer.-v

thesashes 21 at a point spaced from the upper edge thereof in the manner'indicated at 24.

Referring now particularly to Figs. 4, 5 and 6, a channel-shaped traveling bar 25 is slidably mounted in a vertically extending guide 26. The traveling bar has a vertically extendingslot 27 in the side thereof facing the sashes. Aflat sheet metal bracket 28, having a T-shaped tab 29 extending at right angles thereto, is fastened to the traveling bar 25 adjacent the upper edge of each sash. The. T shaped tab 29 is received within the traveling bar 25 with the narrow portion thereof extending through the slot 27. Thelower end of each of the brackets 28 is secured by a bolt 30 extending through the bracket 28 and threaded into .a suitable retaining nut 31 'within the traveling bar 25.: A spring cage or guide 32is mounted within the traveling bar 25 by the same bolt 30 which fastens the bracket 28 thereto. A spring 33 is mounted within the guide 32. Each of the brackets 28,

exceptthe lowermost thereof, is provided with a vertically extending slot .34 adjacent the upper end of the spring 33.

Each of the sashes21 has an upwardly and inwardly extending arm 35 fastened to its side edge adjacent the upper end thereof; Aupin 36. extends outwardly from the upper end of each of the armsv35. The pin 36 associated with each of the upper sashes 21 extends through the slot 34 in each of the-brackets 28'and is urged toward the uppermost portion thereof by the spring 33 associated therewith. The pins36=extending through the slots 34 provide a lost motion connection between each of said upper sashes21; andthe traveling bar 25; The pin 36 associated with: the lowermost .of the sashes 21 extends through a circular hole in the bracket 28 and cannot move longitudinally with respect to said bracket.

The brackets 28 areeach provided adjacent their upper ends with an outwardly extending portion 37 which extends outwardly from the outer edge thereof in thcsame plane as the remainder of said bracket. A flange 38 extends inwardly towardthe center of the. window from they outer edge ofthev portion 37 of each bracket 28 at right angles to the plane of the bracket. the flange 38 is inclined to the vertical;

A bracket 33 is fastened to the lower portion of the side edge of each of the sashes 21 by suitable fastening devices (not shown) extending'through aperture 40 provided in the bracket. A flange 41 extends outwardly at right angles to the planev of the bracket 39 adjacentthe upperinner cornerthereof. The plane of the flange 41, when the sash 21 is in closed position, is inclined to the vertical at an angle substantially equal to the angle of inclination of the flange 38 previously described.

The operation of the lock mechanism illustrated-in Figs. 1 to 7, inclusive, isbest understood by a comparison of Figs. 2-and 4. In Fig. 2, the various elements are shown in the position they will occupy when all of thesashes 21 are in closed position. The pins. 36 on the arms 35* are in the, lowermost portion of the slots 34,- the. springs 33 are compressed and the traveling bar 25 is in its uppermost position. The inner surfaces of the flanges 38- are in. contact with the outer surfaces of the flanges 41 and prevent outward movement of the sashes 21 associated therewith. Initial outward movement. of the lowermost of the sashes 21, in the manner indicated in Fig. 4, will cause initial downward movement of the traveling bar relative to the pins 36 to move the flanges 38 downwardly away from the flanges 41.

Further movement of the lowermost of the sashes 21 will continue the downward movement of the traveling bar 25 carrying therewith the arms 35 of the upper sashes 21 and cause said sashes to pivot outwardly, with thelower edges of the flanges. 41 clearing the upper edges of'the flanges 38.

The plane of Upon closing movement of the lowermost of the sashes 21, the reverse is true. The upper sashes will close first since the pins 36 are urged toward the upper ends of the slots 34 by the springs 33. After the upper sashes 21 close, continued closing movement of the lowermost sash will further move the traveling bar 25 and the flanges 38 connected thereto upwardly into contact with the flanges 41. The inclination of the flanges 38 and 41 provides a cam action whereby the flanges 38 tend to cam the flanges 41 and the sashes associated therewith inwardly, not only to lock the sashes in closed position, but to insure a tight closing thereof.

The modification shown in Figs. 11 and 12 is the same as that shown in Figs. 1 to 7, inclusive, with the exception that the pins 36a are mounted on a sliding block 42 within the traveling bar 25, and the arms 35 are pivotally mounted thereon. The flanges 41a of the brackets 39 attached to the sashes 21 are inclined at a greater angle to the vertical than are the flanges 41 in the modification shown in Figs. 1 to 7.

The operation of the modification shown in Figs. 11 and 12 is the same in all respects as that described with respect to Figs. 1 to 7, inclusive, with the exception that a greater camming action is produced because of the greater inclination of the flanges 41a.

In the modification shown in Figs. 8 to 10, inclusive, all of the elements are the same as those described with respect to Figs. 1 to 7, inclusive, with the exception that the flanges 38 on the brackets 28 are replaced by pivoted latch members 43 pivotally mounted on the pins 36. Each of the latch members 43 is provided with a diagonal slot 44 which slidably receives a pin 45 mounted on each of the brackets 28.

In the operation of the modification shown in Figs. 8 to 10, inclusive, downward movement of the traveling bar 25 and brackets 28 relative to the pins 36 causes the latch members 43 to pivot from their lock position shown in Fig. 8 to their release position shown in Fig. 9. In closing, the action of the pins 45 in the diagonal slots 44 cams the latch members 43 to apply a closing force against the flanges 41 associated with the sashes 21.

From the foregoing description it is evident that the structure disclosed herein not only provides an automatic positive latch for the upper sashes of a multiple sash window construction, but that said positive latch mechanism also applies a closing force to said sashes to insure tight closing thereof.

While I have shown and described the preferred forms of my invention, it is obvious that various changes may be made therein by those skilled in the art, without departing from the spirit of the invention as defined in the appended claims. i

Having thus described my invention, what I claim and desire to secure by Letters Patent is:

1. A latch mechanism for the upper sashes of a multiple sash window construction having a vertically movable traveling bar for actuating said sashes for opening and closing movement thereof, a pivotal connection between the upper portion of said sashes and said traveling bar, said connection including a bracket on said traveling bar, a vertically extending slot in said bracket, an outwardly extending pin on the upper end of said sash extending through said slot thereby providing a lost motion mechanism to permit initial downward movement of said traveling bar relative to said upper sashes without causing opening movement thereof, said latch comprising means connected to the lower portion of the side edges of each of said upper sashes and extending outwardly therefrom, means connected with said traveling bar and adapted to interengage with said first means to prevent opening movement of said upper sashes when said traveling bar is in its uppermost position and adapted to disengage from said first means upon initial downward movement of said traveling bar relative to said, upper sashes to permit opening movement of said upper sashes upon further downward movement of said traveling bar.

2. A latch mechanism for the upper sashes of a mul tiple sash window construction having a vertically movable traveling bar for actuating said sashes for opening and closing movement thereof, a pivotal connection be tween the upper portion of said sashes and said traveling.

bar, said connection including a bracket on said traveling bar, a vertically extending slot in said bracket, an outwardly extending pin on the upper end of said sash extending through said slot thereby providing a lost motion mechanism to permit initial downward movement of said traveling bar relative to said upper sashes without causing opening movement thereof, said latch comprising a flange connected to the lower portion of the side edges of each of said upper sashes and extending outwardly therefrom, the planes of said flanges being inclined to the planes of said sashes, means connected with said traveling bar and adapted to interengage with said flanges to prevent opening movement of said upper sashes when said traveling bar is in its uppermost position and adapted to disengage from said flanges upon initial downward movement of said traveling bar relative to said upper sashes to permit opening movement of said upper sashes upon further downward movement of said traveling bar.

3. A latch mechanism for the upper sashes of a multiple sash window construction having a vertically movable traveling bar for actuating said sashes for opening and closing movement thereof, a pivotal connection between the upper portion of said sashes and said traveling bar, said connection including a bracket on said traveling bar, a vertically extending slot in said bracket, an outwardly extending pin on the upper end of said sash extending through said slot thereby providing a lost motion mechanism to permit initial downward movement of said traveling bar relative to said upper sashes without causing opening movement thereof, said latch comprising a first flange connected to the lower portion of the side edges of each of said upper sashes and extending outwardly therefrom, the planes of said flanges being inclined to the planes of said sashes, a plurality of second flanges connected with said traveling bar and adapted to interengage with said first flanges to prevent opening movement of said upper sashes when said traveling bar is in its uppermost position and adapted to disengage from said first flanges upon initial downward movement of said traveling bar relative to said upper sashes to permit opening movement of said upper sashes upon further downward movement of said traveling bar.

4. A latch mechanism for the upper sashes of a multiple sash window construction having a vertically movable traveling bar for actuating said sashes for opening and closing movement thereof, a pivotal connection between the upper portion of said sashes and said traveling bar, said connection including a bracket on said traveling bar, a vertically extending slot in said bracket, an outwardly extending pin on the upper end of said sash extending through said slot thereby providing a lost motion mechanism to permit initial downward movement of said traveling bar relative to said upper sashes without causing opening movement thereof, said latch comprising a first flange connected to the lower portion of the side edges of each of said upper sashes and extending outwardly therefrom, the planes of said flanges being inclined to the planes of saidsashes, a plurality of second flanges connected with said traveling bar and adapted to interengage with said first flanges to prevent opening movement of said upper sashes when said traveling bar is in its uppermost position and adapted to disengage from said first flanges upon initial downward movement of said traveling bar relative to said upper sashes to permit opening movement of said upper sashes upon fur- ,ther downward movement of said traveling bar, the planes of the second flanges being substantially parallel to the planes of the first flanges when said upper sashes are in closed position.

5. A latch mechanism for the upper sashes of a multiple sash window construction having a vertically movable traveling bar for actuating said sashes for opening and closing movement thereof, a pivotal connection between the upper portion of said sashes and said traveling bar, said connection including a bracket on said traveling bar, a vertically extending slot in said bracket, an outwardly extending pin on the upper end of said sash extending through said slot thereby providing a lost motion mechanism to permit initial downward movement of said traveling bar relative to said upper sashes without causing opening movement thereof, said latch compris' ing a first flange connected to the lower portion of the side edges of each of said upper sashes and extending outwardly therefrom, the planes of said flanges being inclined to the planes of said sashes, a plurality of second flanges connected with said traveling bar and adapted to interengage with said first flanges to prevent opening movement of said upper sashes when said traveling bar is in its uppermost position and adapted to disengage from said first flanges upon initial downward movement of said traveling bar relative to said upper sashes to permit opening movement of said upper sashes upon further downward movement of said traveling bar, the planes of the second flanges being inclined to the longitudinal axis of said traveling bar at an angle less than the angle of inclination between the planes of the first flanges and the planes of said upper sashes.

6. A latch mechanism for the upper sashes of a multiple sash window construction having a vertically movable traveling, bar for actuating said sashes for opening and closing movement thereof, a pivotal connection between the upper portion of said sashes and said traveling her, said connection including a bracket on said traveling bar, a vertically extending slot in said bracket, an outwardly extending pin on the upper end of said sash extending through said slot thereby providing a lost motion mechanism to permit initial downward movement of said traveling bar relative to said upper sashes without causing opening movement thereof, said latch comprising a flange connected to the lower portion of the side edge of each of said upper sashes and extending outwardly therefrom, a pivoted dog pivotally mounted on each of the pivotal connections between said upper sashes and said traveling bar, a diagonal slot in each of said pivoted dogs, and a pin on said traveling bar extending through each of said slots, whereby said dogs will interengage with said flanges to prevent opening movement of said upper sashes when said traveling bar is in its uppermost position and will be rotated to disengage from said flanges upon initial downward movement of said traveling bar relative to said upper sashes to permit opening movement of said upper sashes upon further downward movement of said traveling bar.

References Cited in the file of this patent UNITED STATES PATENTS 2,444,311 Reynaud June 29, 1948 

